Product Introduction

FK(R)N12-24 load break switch and combination appliance is a three-phase high-voltage switchgear with a rated power of 24KV and a rated frequency of 50Hz, which is suitable for power distribution offices of industrial and mining enterprises and substations and other occasions, and is used for splitting and closing load currents as well as closed-loop currents, charging currents of no-load transformers and cables, and short-circuit currents as a means of protecting and controlling electrical equipments. Load switches equipped with grounding switches can withstand short-circuit currents. Equipped with manual and motor operation mechanism, it is convenient to realize the three remote control requirements of power system engineering.

Product Specifications

Specification Sheet

No.	Name	Unit	Data
1	Rated Voltage	kV	24
2	Rated Frequency	Hz	50/60
3	Rated Current	A	≤630(fuse≤125A)
4	Rated Power Frequency Withstand Voltage	kV	79(Across the contact gaps) / 65(To Ground)
5	Rated Lightning Impulse Withstand Voltage	kV	125/145
6	Rated Short-Circuit Breaking Current	kA	31.5
7	Rated Short-time withstandCurrent (Peak)	kA	20
8	Rated Withstand Current (Peak)	kA	50
9	Rated Duration of Short-Circuit	s	2
11	Mechanical Endurance	Times	20000
12	Rated switching current	A	1050

Mechanical Characteristics

No.	Name	Unit	Data
1	The Travel	mm	290±5
2	Contact Overtravel	mm	42±3
3	Distance of Between Phases	mm	300±3
4	Main Circuit Resistance	μΩ	≤300
5	Closing no-simultaneity of 3-phase contacts	ms	≤10
6	Opening no-simultaneity of 3-phase contacts	ms	≤5
7	Maximum operating torque for manual operation	N.m	≤190
8	Contact Bouncing Duration at Closing Operation	ms	≤2
9	Isolation Fracture Distance	mm	≥215

Product Advantages

FK(R)N12-24 load break switch and combination appliance has many advantages:

The product adopts compressed air type arc extinguishing, with stable and reliable performance.

Integrating the switch body and actuating mechanism into one, it integrates the isolating switch, load switch and grounding switch into one, with compact structure and small volume.

Direct-acting isolating break, high dynamic and thermal stability current parameters; unique linkage according to the specified operating procedures, one-time completion of the operation.

Pressurized load switch, grounding switch, live door, switchgear door, strictly according to the "five security" mechanical interlocking to prevent misoperation, safe and reliable.